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HIKARI SHOKO KK

Overview
  • Total Patents
    49
  • GoodIP Patent Rank
    189,047
About

HIKARI SHOKO KK has a total of 49 patent applications. Its first patent ever was published in 1984. It filed its patents most often in Japan. Its main competitors in its focus markets electrical machinery and energy and environmental technology are WUXI ZIZO ELECTRIC CO LTD, SMIT & WILLEM & CO NV and WEINER NORBERT.

Patent filings in countries

World map showing HIKARI SHOKO KKs patent filings in countries
# Country Total Patents
#1 Japan 49

Patent filings per year

Chart showing HIKARI SHOKO KKs patent filings per year from 1900 to 2020

Focus technologies

Top inventors

# Name Total Patents
#1 Fujii Masahiko 25
#2 Kumita Koji 9
#3 Kazama Takuro 5
#4 Murata Ryuji 4
#5 Tamai Ichiro 4
#6 Murata Tatsuya 4
#7 Morimoto Michitoshi 3
#8 Haniyu Itaru 3
#9 Hamano Mitsutaka 3
#10 Murata Mitsuaki 3

Latest patents

Publication Filing date Title
JP2020201060A Insulation resistance monitoring device for ac non-ground circuit
JP2020159691A Insulation state monitoring device
JP2017044586A Insulation resistance monitoring device and detecting voltage estimation method
JP2017020954A Insulation resistance monitoring device in direct current non-grounded electric circuit and monitoring method
JP2017022917A Ground directional relay device and ground directional relay device system
JP2016031253A Dc leakage current detection device
JP2013148401A Insulation monitoring apparatus and monitoring method of direct current non-grounded circuit
JP2010256264A Earth resistance measuring method
JP2007333604A Insulating state monitoring device
JP2006010608A Insulation level monitoring method for non-earthing electric line and device thereof
JP2003215196A Method and device for monitoring state of insulation
JP2002112449A Method and apparatus for detecting and protecting from leak of low voltage ground line
JP2002078190A Ground fault current direction deciding method and ground fault current directional relay
JP2002040078A Insulation monitoring device for low-voltage cable run
JP2002027661A Leakage detection/protection method and apparatus for commonly grounded circuit
JP2002005983A Zero-phase current voltage display device
JP2001352663A Method and apparatus for detecting electrical leak in low-voltage ground electrical circuit
JP2001095146A Ground directional relay and relaying device
JP2001016765A Coordinating lock control circuit and protection relay device
JP2000193708A Method and apparatus for monitoring of insulation of floating electric circuit